Quartz-crushing machine



(No Mod-el.) 2 Sheets-Sheet 1.

r C. DANDURAND.

QUARTZ GRUSHING MAGHINB.

No. 305,()55. Patented Sept. 16. 1884.

/ E/VTOR A fiorney (No Model.) 2 Sheets-Sheet 2-..

' C. DANDUBAND. QUARTZ CRUSHING MAGHINE. No. 305,055. Patnted Sept. 1 6,1884.

A fforney Ur-uren TATES PATENT Gretes@ CYPBIEN DANDURAND, OF VIRGINIACITY, NEVADA.

QUARTZ-CRUSHlNG MACHINE.

SPEC-IFICATION orming part of Letters Patent No. 305,055, datedSeptember 16, 1884-.

Application filed April E& tPF-1. (No model.)

1'0 all whom z' may cancer- :1

Be it known that I. CYPRIEN DANDURAND, a citizen of the United States,residing in Virginia City, in the county of Storey, in the State ofNevada, have invented certain new and useful Irnprovenents inQuartz-Crushing Machines, of which the following is a specification.

My invention rclatcs to inprovenents in quartz-crushin g machines inwhich the stamps are raised by cams firmly attached to a cylinder andacting upon rollers attached to the stems of the sta-mp5, the stens ofthe stamps being square.

The objects of ny nvention are, first, by the use of square stems of thestamps to afford a convenient mode of firnly attaching rollers thereto,second, by the use of cams each of which is so divided as to cause thecam to strike the rollers on each side of the stems, to give a steadymotion to the machine and allow the use of four rollers to each stemwithout unnecessarily encumbering the machine; third, by the use ofrollers, in combination with the cams, to reduce the i'riction andincrease the working power of the machine. I attain these objects by themechanism illustrated in the accompanying drawirgs, in which Figure l isatop view of the machine. Fig. 2 is a front or end view of the machine,showing the stamps in position. Fig. 3 is a vertical sectionandasidevicw of thcmachine; and

Fig. 4 is a view of asection of the stern of one stamp with the rollersand the block to which they are attached, the block being firmlyattached to the stem.

Similar letters refer to similar parts throughout the several views.

The timber-pieces A A A constitute the framework of the machine. A heavycrosspiece, B, is firmly attached to the frame, and such cross-piece Bis pierced with square holes C C, through which the stems of the stampsDD move. i On the sides of the frame of themachine are the bearings G G,in'which rests and revolvcs the aXle N, which runs through the oylinderE and through the frane-work of the machine, and is connected on theoutside of the franie with and is the aXle of the pulley H.

block, It,

The smaller pulley K is attached to'the axle k, which is attached to thecrank M, and to the crank M is attached the motive power. The smallerpulley, K, revolves the larger pulley, H, with which it is connected bythe belt J J. The small roller I, fastened to the frame A A, serves tokeep the belt J J in place by means of a flange on the edge of theroller I. Upon the outer surface of the cylinderE is fastened by meansof bolts a a a series of cams, F F, the number and size of such camsbeing regulated by the size of the cylinder Eand the corresponding sizeof the machine. The cams F F are longitudinally of concave form on theirinner and conveX form ontheir outer surfaces,

those parts of the outer surfaces which touch the rollers being nearlyparallel with the outer surface of the cylinder, and the sides of suchcams are plain parallel surfaces. The end of each cam F farthest fromthe attachment to the eylinder is divided into two equal prongs, LL,

with a sufficieut opening between the prongs' to allow the prongs inrevolution to strike the rollers Q. Q on each side of the stens D Datthe sa me time. The aXle N, which runs through the cylinder E and thepulley H, is fastenedto the cylinder E by spokes f f in the inside ofthe cylinder, the cylinder being otherwisehollow. To each sten D isfirmly attached a and to each block R are attached four rollerstworollers on each side of the stem, as in Fig. 4-upon which rollersthecams F F, in revolving, come in contact and raise the stamps, and uponthe continued revolving of the cylinder E and the cams F F, attachedthereto, the stamps are released and fall upon the material to bereducedin the receptacleV. The cams are so adj usted on the cylinder Ethat no two of the stamps fall at the sane time. The shapes of the camsF with the prongs L Land the square stens D D differ from the shapes ofthe cams or levers and shapes of the stems now in use, and the rollers QQ, attached to the blocks It R, and the attachment of the blocks RR tothe stems D D are new.

The front of the framework of the machine, as appears in Fig. 2, and thetop of the machine, as appears in Fig. 1, are entirely open, and back ofthe stamps D D is a metal partition, T, attaehed to the bottom. of the[rame und to the cross-piece O. The object ot' the partition T is tokeep the ore in the front of the machine under the stmnps and convenientfor removal When redueed'.

The receptaele V may be made in any eonvenient form for the Working ofthe st tnps and for the reuovei of the ore. The erosspiece O runs acrossthe machine, and is attached thereto, as in Fig. 2. It strengthens theframeof the machine. 'Po its inner surface is attaohed the metalpartitiou T, and through theinner part of this cross-piece O ure Squareholes, through which the stens D D move. An iron rod runs through thelength of this bean; and serves as the axle of the rollers P P. Suohrollers PP are for the purpose his CYPRIEN DANDUBAND.

mark. \Vitnesses:

J G. LEGRIS, A. O. LAVIGNE.

